Yarn-spinning apparatus.



A. AVERY. YARN SPINNING APPARATUS.

APPLICATION FILED JUNE 10, 1912.

Patented Oct. 13, 1914.

THE NORRIS PETERS CO.. PHOTO-LITHQ. WASHINGTON. D. C

UNITED STATES PATENT-OFFICE.

AMARIAI-I AVERY, or MANCHESTER, NEW HAMPSHIRE.

YARN-SPINNIN G APPARATUS.

To all whom it may concern: I

Be it known that I, AMARIAH AVERY, a citizen of the United States, andresident of. Manchester, county of Hillsboro,-State of New Hampshire,have invented an Improvement in Yarn-Spinning Apparatus, of which thefollowing description, in connection with the accompanying drawing, is aspecification, like characters on the drawing representing like parts.

a This invention relates to apparatus for.

spinning yarn, and ithas for its particular object the production ofnovel, simple and efl ective means to prevent grooving or scoring of theroll surfaces, especially when the roll is covered with leather or.similar material. a

In apparatus of the general character to which my invention relates itis well known that the yarn is traversed back and forth as it passesthrough the rolls, in order that the wear. shall be distributed asevenly as possible over'the roll surfaces. Even with this traverse,however, the surface of a leather covered roll is very apt to be groovedat each end of the traverse, at the points where the traverse isreversed, such grooving resulting in the production of uneven and faultyyarn. .To overcome this mechanism has been devised to vary the stroke ofthe reciprocating traverse-bar, so that the re.- versing points of thetraverse on the rolls shall fall in irregular paths, but so far as I amaware all such devices are quite complicated in construction and to thatextent they are objectionable.

In myv present invention I have eliminated any complication of thetraverse mechanism,

and I effect the reciprocation of the traversebar with a constantstroke, but by means of a novel construction of the yarn-guide I makeuse of the rise and fall of the yarn as it leaves the spool or othersource of supply.

The guide is provided with an elongated and upwardly extended diagonalslot through which the yarn passes on its way to the rolls, and thetravel of the yarn up and down .the slot, in conjunction with thelateral traverse of the guide, causes the reversing points of the yarnto lie in irregular paths on the roll surface. Thus the wear is evenlydistributed and the scoring or grooving hereinbefore referred to iseliminated effectually.

Specification of Letters Patent.

The various novel features of my invention will be fully described inthe subjoined specification and particularly pointed out in thefollowing claims.

Figure 1 is a side elevation of a sufficient portion of a spinningapparatus to be understood, with my present invention embodied therein;Fig. 2 is a front elevation of a portion of the traverse bar, the devicefor reciprocating it laterally, and several of the yarn-guides mountedon the bar; Fig. 3 is an enlarged front elevation of one of the guideswith a portion of the yarn mass on a spool behind it, to show therelative positions of the spool and the guide slot for the yarn; Fig. 4is a portion of the surface of the leather-covered front drawing roll,with the varying positions of the traverses indicated by transverselines.

iteferring to Fig.1, the upper and lower back rolls 1, 2, intermediateor carrier rolls 3, and front drawing rolls 4, 5, are of well knownconstruction, the upper front roll 4 being covered with leather or othersimilar material, as at 6. The yarn 7 passes to the rolls from a yarnsupply, such as a spool 8',

mounted to rotate on an upright support 9 on a creel-frame or the like,indicated at 10. Back of the rolls is located the traverse bar 11, ofusual construction, and'laterally reciprocated in 'any usual manner;herein I have shown said bar reciprocated by an ec centric 12cooperating withrolls 18 on the traverse-bar, said eccentric beingrevolved slowly by the shaft 14 having'an attached worm gear 15 drivenby a worm gear 16, Fig. 1, on the lower back-roll 2. This particularmechanism is well known in the art, and forms no novel part of thisinvention, and any other mechanism can'be used instead thereof to effectthe lateral reciprocation of the traverse-bar. In accordance with myinvention I attach to the said bar 11 a series of yarn-guides, one foreach yarn as it is led from a spool, the yarn-guide being shown as arigid, flat metal plate 17 of greater length than width, and providedwith an elongated central slot '18, open at its upper end for the readyentranceof the yarn.

Each guide has at its lower end a foot 19 v Patented Oct. 13, 1914.

Application filed .Tune 10, 1912. v Serial No. 702,647. I

provided with transverse lips or ledges 20,

Fig. 1, the shank of the bolt passing through an elongated transverseslot 23 in the foot, this slot permitting any necessary lateraladjustment of a guide on the bar, as will be apparent.

As shown in Figs. 2 and 3 the body or slotted part of the guide is setdiagonally with relation to the foot, so that the several guide slots18, while in parallelism, Fig. 2, are diagonal with relation to the pathof movement of the traverse-bar 11. It will be apparent that if theguide slot were at right angles to the traverse-bar the rise and fall ofthe yarn in the slot would have no effect on the traverse of the yarn onthe rolls, as every traverse would reverse at points directly in linewith the reversing points. of preceding and following traverses. Bymaking the slots diagonal, however, the reversing points of thetraverses are varied, depending upon the position of the yarn in theslot of the guide. That is, as the yarn unwinds from the spool the Voint of departure of the yarn as unwound rom the spool rises and falls,as indicated in Fig. 1 by full and dotted lines, and hence the yarntravels up and down in the guide slot 18. This variation in the positionof the yarn in the slot, acting in conjunction with the lateral traverseof the yarn-guide bodily, causes the yarn as traversed on the rolls toreverse at points which lie in irregular or sinuous paths, varying indistance from the ends of the rolls. This is shown in Fig. 4:, wherein aportion of the covering 6 of the front top roll at is indicated asproduced, and thereon a number of yarn traverses are indicated by thehorizontal lines 24, 25 the reversing points or ends of such traversesbeing offset successively to the right as the yarn moves upward in itsguide slot, as in the group 24, and as the yarn moves downward in theslot the reversing points are offset successively to the left, as in thegroup 25. As this grouping is varied by the movement of the yarn in theslot in the direction of its length, and such movement is more or lessirregular, it is inevitable that the reversing points on the rolls willlie in very irregular paths, so that the wear is distributed evenlythereover, and grooving or scoring is eliminated.

A very short and relatively slow stroke of the traverse-bar effects therequisite reciprocation thereof, and in practice the stroke may be aboutone-fourth of an inch in length, for a front roll having a length offrom an inch to an inch and one quarter.

It will be apparent from the foregoing description that the means forobtaining the desired distribution of the yarn traverses upon the rollsurface is exceedingly simple,

andthat it obviates any complication of or change in the mechanism foreflecting the lateral reciprocation of the traverse-bar.

Having fully described my invention,

what I claim as new and desire to secure by Letters Patent is:

1. In yarn spinning apparatus, a series of rolls through which the yarnis drawn from rotatable spools, a traverse-bar between the spools androlls and reciprocated with a constant stroke, and a series of guidesfixed thereon and each having an upwardly extended, diagonal slotthrough which the yarn passes from a spool to the rolls, the travel ofthe yarn up and down the slot and the bodily traverse of the guidelaterally cooperating to prevent the traverses of the yarn on the rollsfrom reversing at points equidistant from the ends of the rolls.

2. In yarn spinning apparatus, a series of rolls to act upon the yarndrawn from rotatable spools, a series of laterally reciprocatedyarn-guides between the spools and the rolls, to traverse the yarn as itpasses through the rolls, and means on each guide to act upon the yarnwith which the guide cooperates and cause the yarn as traversed on therolls to reverse at points in irregular paths thereon.

3. In yarn spinning apparatus, drawing rolls, upright supports forrotatable spools from which yarn is drawn by the rolls, and

a series of yarn guides reciprocated laterally with a constant stroke ina plane substantially parallel to the axes of rotation of the spools andlocated between the latter and the rolls, each guide having an upwardlyextended, diagonal slot through which the yarn passes from a spool totherolls, the yarn traveling longitudinally .of the slot as its point ofdeparture from the spool rises and falls and acting in conjunction withthe bodily traverse of the guide to cause the yarn as traversed upon therolls to reverse its direction laterally at points in irregular paths atvarying distances from the ends of the rolls.

4. In yarn spinning apparatus, a series of rolls through which the yarnis drawn, and means to traverse the yarn upon the rolls as it passestherethrough, said means comprising a guide reciprocated laterally witha constant stroke and having an upwardly extended, diagonal slot throughwhich the yarn passes to the rolls, the resultant action of the lateraltraverse of the yarn and its travel longitudinally in the slot causingthe yarn as traversed on the rolls to reverse at points in irregularpaths thereon, to prevent grooving or scoring of the roll surface.

5. In spinning apparatus, a traverse-bar reciprocated with a constantstroke, and a yarn-guide thereon having a foot laterally adjustable onthe bars and an upturned portion provided with an elongated, diagonalslot for the passage of the yarn therethrough, the slot changing thelateral position of the yarn as it rises-and falls in the 7 slot.

chine having a vertical thread spool and a horizontal roller over whichthe thread is drawn from said spool, and a guide device arranged betweenthe roller and the spool and provided with an obliquely disposed slotthrough which the thread extends, whereby the thread is shiftedlongitudinally uponthe roller in the regular rise and fall thereof as itunwinds from the spool.

7. The combination with a spinning machine having a vertical threadspool and a horizontal roller over which the thread is drawn from saidspool, and a guide member mounted between said roller and the threadspool and provided with an obliquely inclined slot opening upon theupper end of said guide member and adapted to receive the thread,whereby the thread is shifted longitudinally upon the roller in theregular rise and fall of the thread as itunwinds from the spool.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscrlblng wltnesses.

AMARIAH AVERY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

